Fiber index is measured using the conical elutriation method.

纤维指数用圆锥淘洗法测量。

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The particle sizes measured by elutriation method and laser particle size analysis are bigger than those by the other two methods due to aggregation.

采用淘析法、激光粒度分析法、渗透过滤法、显微镜法对膨润土及石英的粒度进行测量比较分析。

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